Device for holding precious stones during cutting and polishing

Details Device for holding precious stones during cutting and polishing Device for holding precious stones during cutting and polishing

1979-01-26

1980-09-09

Whitehead, Harold D.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

125 11N, B24B 916

Patent

active

042210828

ABSTRACT:
A device for holding precious stones during cutting and polishing the facets thereof comprises a rod having a mounting tip at one end for mounting the stone, a positioning collar loosely received on the rod so as to be movable both axially and rotatably thereon and including a plurality of flat faces on its outer surface each adapted to be pressed against a locating surface of an aligning fixture for positioning the stone with respect to a cutting or polishing disc, an indexing collar having a plurality of indexing positions, and spring means for fixing the positioning collar to the indexing collar and the latter collar to the rod at desired preselected positions.

REFERENCES:
patent: 893920 (1908-07-01), Griesch
patent: 2542698 (1951-02-01), O'Brien
patent: 2999493 (1961-09-01), Blair
patent: 3098327 (1963-07-01), Malin
patent: 3135073 (1964-06-01), Odle
patent: 4140098 (1979-02-01), Sawin

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